hi Randall thank you for your reply. to make a long story short as i tested everything you sent me and maybe more, both httpprovider and module version do the same thing: recordings work perfectly (metadata + audio/video) if leaving default path, produces a metadata only when setting custom path. i could re-send the logs and commands, everything is in previous posts…
i’ve just made another test changing “flv” to “1”, same result
look i’ve tryed on 2 differents servers, 3 fresh install nothing else installed, basic setup and usage, using both module class and httpprovider and have the same result everytime. i dont say this is wowza related, it could be ubuntu related, i just need a solution 
about the httpprovider null error, it is not a bug deal in itself, i just mentionned it in case it could be related. but by the way i also tryed publishing to app (without specific app instance name) and had again the same result with both httpprovider and module class
and to make sure it wasnt related with my fla code, i tryed also with the samples provided
thank you for your help